swath: IW1
Bperp (average): 90.34572876270506
Bpar (average): 1.633482199179929
swath: IW2
Bperp (average): 90.14362007007335
Bpar (average): -5.6775157412701445
swath: IW3
Bperp (average): 89.53240227843042
Bpar (average): -11.79156250617676